There’s a method behind her madness: She’s playing hard to get to gauge your interest and level of commitment, a new study in the European Journal of Personality reveals. Women who act demure at first are mainly looking to weed out guys who want one-night-stands rather than real relationships, says study author Peter K. Jonason, Ph.D.

But is your new lust playing an evolutionary dating game or is she just not that into you? Don’t feel bad if you’re not sure—you’re wired to think she’s interested, even if she’s not, READ MORE HERE